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Handle more matching methods in Lint/OutOfRangeRegexpRef #8464

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eugeneius
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@eugeneius eugeneius commented Aug 5, 2020

Followup to @marcandre's comment here: #8463 (comment)

when, grep, gsub, gsub! sub, sub!, [], slice, slice! scan, index, rindex, partition, rpartition, start_with?, and end_with? can all be used to match regexps and set last match global variables, so we should update the range of valid references when we encounter them.

These were all of the relevant methods I could find from a quick grep of ruby/spec, although there could well be more.

Update: I read through the String class' docs and added several more methods.


Before submitting the PR make sure the following are checked:

  • Wrote good commit messages.
  • Commit message starts with [Fix #issue-number] (if the related issue exists).
  • Feature branch is up-to-date with master (if not - rebase it).
  • Squashed related commits together.
  • Added tests.
  • Added an entry to the Changelog if the new code introduces user-observable changes. See changelog entry format.
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  • Run bundle exec rake default. It executes all tests and RuboCop for itself, and generates the documentation.

@eugeneius eugeneius force-pushed the out_of_range_regexp_ref_more_methods branch 5 times, most recently from f1873d0 to aebb623 Compare August 6, 2020 19:32
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Good stuff 💪

lib/rubocop/cop/lint/out_of_range_regexp_ref.rb Outdated Show resolved Hide resolved
lib/rubocop/cop/lint/out_of_range_regexp_ref.rb Outdated Show resolved Hide resolved
`when`, `grep`, `gsub`, `gsub!` `sub`, `sub!`, `[]`, `slice`, `slice!`,
`scan`, `index`, `rindex`, `partition`, `rpartition`, `start_with?`, and
`end_with?` can all be used to match regexps, so we should update the
range of valid references when we encounter them.
@eugeneius eugeneius force-pushed the out_of_range_regexp_ref_more_methods branch from aebb623 to fa1fc0b Compare August 6, 2020 20:59
@marcandre marcandre merged commit 7552fed into rubocop:master Aug 7, 2020
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Looks great, thanks for the PR! 👍

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2 participants